Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Comprehensive controlling and protecting device and comprehensive controlling and protecting method for waste heat recovery turbo generator set

A steam turbine generator set, integrated control technology, applied in the direction of controlling generators, control systems, engine components, etc., can solve problems such as inability to communicate with the host computer, high structural cost of the control system, unfavorable centralized monitoring and diagnosis, etc.

Inactive Publication Date: 2012-10-03
WUHAN GREAT SEA HI TECH
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the many discrete single-function devices in the existing technology, the disadvantages are: 1. It cannot communicate with the host computer, which is not conducive to centralized monitoring and diagnosis; 2. The control system itself has a large structural cost, including more consumables; 3. Every Each single-function device needs to be installed, debugged and calibrated separately, which increases the complexity of debugging and labor costs; 4. Too many single-function devices also affect the reliability of the whole machine to a certain extent; 5. The installation space occupied is large, and the matching The control cabinet is correspondingly larger

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Comprehensive controlling and protecting device and comprehensive controlling and protecting method for waste heat recovery turbo generator set
  • Comprehensive controlling and protecting device and comprehensive controlling and protecting method for waste heat recovery turbo generator set
  • Comprehensive controlling and protecting device and comprehensive controlling and protecting method for waste heat recovery turbo generator set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Such as figure 1 , 2 Shown is the basic embodiment of the device of the present invention. A comprehensive control and protection device for a waste heat recovery steam turbine generator set, which includes a control computer 1, a voltage sensor 2, a current sensor 3, a communication unit 5, and a fault protection and alarm signal unit 15; the voltage sensor 2 and the current sensor 3 Installed on the output line of the generator 6, and connected with the control computer 1 through an analog connection, it is used to measure the output voltage, current and grid voltage of the generator set 6, and send the measured parameters to the control computer 1 to calculate the output voltage of the generator 6. Active power, reactive power, power factor, grid voltage, grid frequency, generator voltage, and generator frequency are judged and processed to realize the protection and control of the generator 6; the control computer 1 is also connected with: a A voltag...

Embodiment 2

[0030] Example 2: What is different from Embodiment 1 is a specific and better technical solution: the control computer 1 adopts a 32-bit ARM single-chip microcomputer, the hardware integration is high, the liquid crystal display LCD is 132x64, with a backlight, and the optional interface in Chinese, English and other languages Operation, the PC adjusts the controller parameters through the USB interface, and adjusts and monitors through the RS485 interface unit; the communication unit 5 has an RS485 communication interface, and the remote control function can be realized by using the MODBUS protocol.

Embodiment 3

[0031] Example 3: It is an embodiment of a comprehensive control and protection method for a waste heat recovery turbogenerator set using the device of the present invention, and the steps of the method are as follows:

[0032] A. Generator constant power factor control:

[0033] The control computer 1 calculates the magnitude of active power and reactive power, and outputs a 4-20mA control signal to the automatic voltage regulator 6.1 of the generator through the voltage and reactive power control signal unit 9 to realize the constant power factor control of the generator 6 ;

[0034] B. Steam turbine active power feedback and frequency control:

[0035] The control computer 1 outputs a 4-20mA active signal to the steam turbine controller 8 through the active power output signal unit 12, which is used as a power feedback signal for the active power control of the steam turbine 7, and the steam turbine controller 8 realizes the active power control of the steam turbine; throu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a comprehensive controlling and protecting device and a comprehensive controlling and protecting method for a waste heat recovery turbo generator set. The device comprises a control computer, a voltage sensor, a current sensor, a communication unit and a fault protection and alarm signal unit; the voltage sensor and the current sensor are arranged on an output line of a generator and connected with the control computer through a simulated connecting line; and the control computer is also provided with a voltage and reactive power control signal unit. The method comprises the steps of constant power factor control of the generator, active power control of a steam turbine, voltage adjustment and frequency adjustment of the generator, connection of the generator and a power grid and the like. The device has the advantages of high integration degree, simple structure, small size, low cost, convenience in installation, low debugging workload, wide application range, high efficiency and high reliability, can communicate with an upper computer, and fulfills the aims of centralized monitoring and diagnosis. The method has the advantages of high automation degree, stability and reliability, and is easy to operate.

Description

technical field [0001] The invention relates to a comprehensive control and protection device and a comprehensive control and protection method of a waste heat recovery steam turbine generator set, belonging to the technical field of control in electric systems. Background technique [0002] The control system of the existing waste heat recovery steam turbine generator set is divided into a generator control part and a steam turbine control part, and the steam turbine control part is generally controlled by a dedicated integrated controller. The control and protection of the generator set are composed of discrete single-function devices, such as image 3 As shown; the grid-connected control of the generator set and the reverse power, over-current, over-voltage, single-phase grounding, grid failure, active power measurement of the generator, and reactive power control of the generator set all use discrete single-function devices. Through the control of these single-function d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/18H02P9/04F01D19/00
CPCY02E40/30Y02A30/60
Inventor 梅映新夏焕锦高水华李志彭绍伟
Owner WUHAN GREAT SEA HI TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com